Maple seeds fly by means of double-winged sails which carry them far afield before they settle.

Ash seeds have peculiar appendages which act like a skate-sail in transporting them to distant sections.

Cottonwood seeds have downy wings which aid their flight, while basswood seeds are distributed over the country by means of parachute-like wings.
The pods of the locust tree fall on the frozen ground or snow crust and are blown long distances from their source.

On the other hand, oak, hickory, and chestnut trees produce heavy seeds which generally remain where they fall.
Squirrels are the most industrious foresters in the animal world.
Each year they bury great quantities of tree seeds in hoards or caches hidden away in hollow logs or in the moss and leaves of the forest floor.

Birds also scatter tree seed here, there, and everywhere over the forests and the surrounding country.